Gionee Mobiles — New mobile give errors in running applications and holding the calls itself

Address:

Gautam Buddh Nagar, Uttar Pradesh, 201301

I bought a new gionee s7 mobile phone and just after a month it started giving errors andd closing applications at random
It also puts calls on hold itself and irritates all other listeners on a conference calls.
When i asked gionee to repair the same their service centre took the mobile from me and i have to buy a new mobile for me as i can't work without mobile
Their products are defective and service network is poor
The customercare phone always disconnects after a while and you can talk to anyone there